Quepos Weather in September
September in Quepos brings high temperatures, with highs of 27°C (81°F) and nights dropping to 23°C (73°F). The rainy season is in full swing this month, so frequent downpours are part of the picture.
Rainfall in Quepos in September
Quepos is in the rainy season in September, with rain on around 22 days and an average of 832 mm (33 in). With high rainfall totals spread across the month, individual showers can be very heavy. Waterproof gear is strongly recommended.
Temperature in Quepos in September
Daytime temperatures in Quepos reach 27°C (81°F) in September, dropping to 23°C (73°F) at night. Overall, the month follows a fairly predictable daily temperature pattern. Nights remain mild at 23°C (73°F), making evenings a pleasant time to be outdoors.
Sunshine in Quepos in September
The city usually sees around 153 hours of sunlight, indicating a moderately sunny period (despite it being part of rainy season).If you're looking for dry conditions and comfortable temperatures, September may not be the ideal month to visit Quepos. Our weather planner can help you explore destinations with more pleasant weather conditions.
Check the conditions for any month of the year.
For a detailed overview over the year and the best time to visit Costa Rica, check out our Quepos's climate page.
Quepos Temperature in September
Min Temperature
23°C (73°F)
Max Temperature
27°C (81°F)
Chance of Rain
73%
Precipitation
832 mm (33 in)
Rainy days
22 days
Humidity
83%
Sunshine
153 hours
Percentage Sunshine
Daily Historical Temperatures
44-year average (1976-2025)
Based on our historical records, temperatures in Quepos typically stay consistent throughout September, with daily highs averaging around 27°C (81°F). Nights are pleasant, with lows around 19°C (66°F).
Average temperatures in September
Daily Historical Precipitation
44-year average (1976-2025)
Average daily rainfall for each day of the month based on long-term records.
Average precipitation in September
Historical weather for Quepos in September
Browse day-by-day weather records for Quepos spanning 51 years. Select any month and year to see actual temperatures, rainfall, and conditions recorded on each day.
Quepos historical weather extremes in September
Based on 29 years of weather observations (1996-2025), these are the most extreme conditions recorded in Quepos.
- Quepos recorded its highest September temperature of 33°C (91°F) on September 7, 2009.
- Quepos experienced its chilliest September day on September 29, 2010, reaching only 21°C (70°F).
- The lowest overnight temperature recorded in September was 13°C (55°F) (September 29, 2010).
- The wettest day in September Quepos was on September 27, 2019 with 166 mm (6.5 in) of precipitation.
Best Places in Costa Rica in September
Find out more about the weather in Costa Rica and which places have the best travel conditions in this month. See all of Costa Rica in September →
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What to Wear in Quepos in September
Warm but pleasant conditions in Quepos in September. Focus on lightweight, maybe with natural fabrics, cotton blend shirts, comfortable shorts, and breathable footwear. A light cover-up for sun protection is smart too. It's going to pour! Pack a good poncho and prepare for very wet conditions. Bring sunglasses since you'll have some sunny periods throughout the monthWhat To Do in Quepos in September
We rated the following activities from 1 (least suitable) to 10 (best) to do.
Check the conditions for any month of the year.
For a detailed overview over the year and the best time to visit Costa Rica, check out our Quepos's climate page.
Temperature Rainfall Sunshine Humidity
See the full Quepos climate overview or explore weather in Costa Rica.
